Global Gamma Observatory Looks for (Two) Homes

摘要

An ambitious project to build twin observatories capable of detecting gamma rays- high-energy photons-from deep space has reached a crucial phase as the consortium of 27 countries must decide which two of nine possible sites will host the Cherenkov Telescope Array (CTA). The nations vying to provide homes for the €200 million instruments must file reports on the seeing conditions at their sites by the end of this month, and the CTA Consortium will then make a choice by December. "Right now everything is so uncertain that anyone could win," says Alberto Etchegoyen, director of Argentina's Institute of Technology in Detection and Astroparticles in Buenos Aires, who presented his country's site during a CTA meeting last month in Chicago.